Barrier type heat pipe heat exchanger
By using multi-layer insulation panels and fin structures in the heat pipe heat exchanger to block fresh air and exhaust air, the problem of fresh air pollution in the existing technology is solved, efficient heat recovery and clean fresh air supply is achieved, and the medical buildings are met Strict requirements.
Patent Information
- Application Number
- CN202411594821.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-10
- Publication Date
- 2025-01-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
There is a cross-contamination problem between fresh air and exhaust air during the waste heat recovery process of existing heat exchangers. Especially under the strict requirements that fresh air cannot be polluted by exhaust air in medical buildings, there is still a small amount of exhaust air leakage toward fresh air. phenomenon.
A barrier heat pipe heat exchanger is designed, adopting a combined structure of the heat exchanger shell, heat pipe pillar, fin and thermal insulation board. By opening holes in the heat pipe pillar and thermal insulation board and installing thermal insulation board, combined with a round table The nozzle and fins form a multi-layer insulation panel structure to block fresh air and exhaust air, reduce gas leakage, and fill the heat pipe pillar with insulation cotton and working liquid to form a closed structure.
It effectively avoids the intersection of pollution between fresh air and exhaust air, significantly reduces the mixing of exhaust air and fresh air, improves the efficiency of heat recovery, reduces energy waste, and meets strict fresh air cleaning requirements in medical buildings.
Smart Images
Figure CN119289740A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of heat exchangers, and in particular to an energy-saving heat exchanger for preventing fresh air from being polluted by exhaust air, and specifically discloses a barrier heat pipe heat exchanger. Background Art
[0002] At present, the exhaust air of the air conditioning systems in many medical buildings contains a large amount of infectious polluted air, and a large amount of waste gas is generated during chemical construction work. These exhaust air contains a large amount of heat energy, and directly discharging it into the atmosphere will cause a large amount of energy waste. At present, the heat exchangers commonly used for waste heat recovery are rotary heat exchangers, plate heat exchangers and heat pipe heat exchangers. Some of these heat exchangers have high heat exchange efficiency, but there is cross-contamination between fresh air and exhaust air. Especially in some functional areas of the hospital, it is strictly required that fresh air cannot be polluted by exhaust air. Heat pipe heat exchangers can effectively reduce the pollution of fresh air and exhaust air, but there is still a small amount of exhaust air leaking into fresh air.
[0003] In view of the above problems, the present invention provides a barrier-type heat pipe heat exchanger, which can generate a barrier wall between the fresh air and the exhaust air of the heat pipe heat exchanger, thereby avoiding contamination between gases while recovering heat. Summary of the invention
[0004] The object of the present invention is to provide a waste heat recovery heat exchanger which can effectively solve the problem of exhaust air from a heat pipe heat exchanger polluting fresh air.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a barrier heat pipe heat exchanger, characterized in that it comprises a heat exchanger shell, a heat exchange heat pipe, a heat pipe support, a fin and an insulating baffle, the heat exchanger shell has two vents inside, the heat pipe support is located between the two vents, the heat pipe support is hollow inside, a certain number of holes are opened on both sides of the heat pipe support, and holes corresponding to the positions and numbers of the heat pipe support are also opened on the insulating baffle, the insulating baffle is installed inside the heat pipe support, the heat exchange heat pipe passes through these holes, and the gaps in the holes are sealed, and the fins are evenly installed on the heat exchange heat pipes on both sides of the heat pipe support and maintained at a certain distance.
[0006] Preferably, the interior of the heat exchanger shell is filled with thermal insulation cotton, and both ends of the heat exchange heat pipe are welded to form a closed structure of the heat exchange heat pipe, and the closed structure is filled with working liquid and evacuated.
[0007] Preferably, the opening of the insulating baffle is provided with a truncated cone guide nozzle, which can effectively reduce gas leakage from the gap of the insulating baffle. The truncated cone guide nozzle has the function of guiding the flow of fluid, and the gap between the heat exchange heat pipe and the insulating baffle is sealed.
[0008] Preferably, the insulating baffles are made of insulating materials and are installed on the insulating part of the heat exchange heat pipe. A certain distance is maintained between each insulating baffle. Exhaust air flows into the insulating section through the insulating baffles. Since the exhaust air has a large resistance when passing through the gaps of the first insulating baffle, the speed of the leaked exhaust air is greatly reduced. Only a very small amount of exhaust air continues to pass through the gaps of the second insulating baffle to enter the next insulating pipe section. Similarly, only a very small amount of fresh air passes through the two insulating baffles to enter the middle insulating pipe section. At this time, the fresh air and exhaust air on both sides of the gap of the middle insulating baffle flow in opposite directions, causing the flow rate of the fresh air and exhaust air to almost drop to zero. The two fluids circulate along the two sides of the insulating baffle, and the insulating baffle forms an air wall, which further hinders the mixing of the fresh air and the exhaust air.
[0009] Preferably, the device consisting of the heat exchange heat pipe and the heat pipe support is divided into three parts, namely, an evaporation section, an insulation section and a condensation section.
[0010] Preferably, the fins have good thermal conductivity, which enhances the heat exchange between the heat pipe and the gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a structural schematic diagram of a preferred embodiment of a barrier heat pipe heat exchanger in the present invention. Figure 2 It is the front view of the present invention Figure 3 is a side perspective view of the present invention Figure 4 It is a top perspective view of the present invention Figure 5 yes Figure 1 Local fluid flow trajectory diagram at point A Figure 6 This is the insulation barrier principle diagram of the present invention In the figure: a heat exchanger shell 1, a heat exchange heat pipe 2, a heat pipe support 3, a fin 4, an insulating baffle 5, a truncated cone nozzle 51, a first insulating baffle 511, a second insulating baffle 512, a third insulating baffle 513, a fourth insulating baffle 514, and a fifth insulating baffle 515. DETAILED DESCRIPTION
[0012] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.
[0013] This specific embodiment provides a barrier heat pipe heat exchanger, such as Figure 1-Figure 6 As shown, it includes a heat exchanger shell 1, a heat exchange heat pipe 2, a heat pipe support 3, a fin 4 and an insulating partition 5. The heat exchanger shell 1 has two vents inside, and the heat pipe support 3 is located between the two vents. The heat pipe support 3 is hollow inside, and a certain number of channels are opened on both sides of the heat pipe support 3. The insulating partition 5 also has channels corresponding to the positions and numbers of the heat pipe support 3. The insulating partition 5 is installed inside the heat pipe support 3, and the heat exchange heat pipe 2 passes through these channels, and the gaps in the channels are blocked. The fins 4 are evenly installed on the heat exchange heat pipes 2 on both sides of the heat pipe support 3 and keep a certain distance.
[0014] Specifically, the interior of the heat exchanger shell 1 is filled with thermal insulation cotton, and both ends of the heat exchange heat pipe 2 are welded to form a closed structure of the heat exchange heat pipe 2. The closed structure is filled with working liquid and evacuated.
[0015] like Figure 5 There is a truncated cone guide nozzle on the opening of the insulating baffle 5, which can effectively reduce the leakage of gas from the gap of the insulating baffle. The truncated cone guide nozzle has the function of guiding the flow of fluid, and the gap between the heat exchange heat pipe and the insulating baffle is sealed.
[0016] like Figure 6 The insulation baffle barrier principle: the insulation baffle 5 uses insulation material and is installed on the insulation part of the heat exchange heat pipe 2. A certain distance is maintained between each insulation baffle 5. The exhaust air flows into the insulation section through the insulation baffle 5. Since the exhaust air has a large resistance when passing through the gap of the first insulation baffle 511, the speed of the leaked exhaust air is greatly reduced. Only a very small amount of exhaust air continues to pass through the gap of the second insulation baffle 512 to enter the next insulation pipe section. Similarly, only a very small amount of fresh air passes through the fifth insulation baffle 515 and the fourth insulation baffle 514 to enter the middle insulation pipe section. At this time, the fresh air and exhaust air on both sides of the gap of the third insulation baffle 513 in the middle have opposite flow directions at points a and b, causing the flow rate of the fresh air and exhaust air to almost drop to zero. The two streams of fluid circulate along both sides of the third insulation baffle 513, forming an air wall at the third insulation baffle 513, further hindering the mixing of the fresh air and the exhaust air.
[0017] The device composed of the heat exchange heat pipe 2 and the heat pipe support 3 is divided into three parts, namely, an evaporation section, an insulation section and a condensation section.
[0018] The fins 4 have good thermal conductivity and enhance the heat exchange between the heat pipe and the gas.
[0019] Compared with the prior art, the present invention can recover heat energy while avoiding the pollution of fresh air by exhaust air. The present invention has broad application prospects in the field of energy conservation.
[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.
Claims
1. Barrier type heat pipe heat exchanger, characterized in that: It includes a heat exchanger shell, a heat exchange heat pipe, a heat pipe support, a fin and an insulating baffle. The heat exchanger shell has two vents inside, and the heat pipe support is located between the two vents. The heat pipe support is hollow inside, and a certain number of holes are opened on both sides of the heat pipe support. The insulating baffle also has holes corresponding to the positions and numbers of the heat pipe supports. The insulating baffle is installed inside the heat pipe support, and the heat exchange heat pipe passes through these holes, and the gaps in the holes are sealed. The fins are evenly installed on the heat exchange heat pipes on both sides of the heat pipe support and keep a certain distance.
2. The barrier type heat pipe heat exchanger according to claim 1, characterized in that: The interior of the heat exchanger shell is filled with thermal insulation cotton.
3. The barrier type heat pipe heat exchanger according to claim 1, characterized in that: The two ends of the heat exchange heat pipe are welded to form a closed structure, and the closed structure is filled with working liquid and evacuated.
4. The barrier type heat pipe heat exchanger according to claim 1, characterized in that: The opening of the thermal insulation baffle is provided with a truncated cone guide nozzle, which can effectively reduce the leakage of gas from the gap of the thermal insulation baffle. The truncated cone guide nozzle has the function of guiding the flow of fluid, and the gap between the heat exchange heat pipe and the thermal insulation baffle is sealed.
5. The barrier type heat pipe heat exchanger according to claim 1, characterized in that: The insulation partition uses insulation material and is installed on the insulation part of the heat exchange heat pipe. A certain distance is maintained between each insulation partition. Exhaust air flows into the insulation section through the insulation partition. Since the resistance of exhaust air passing through the gap of the first insulation partition is very large, the speed of the leaked exhaust air is greatly reduced. Only a very small amount of exhaust air continues to pass through the gap of the second insulation partition to enter the next insulation pipe section. Similarly, only a very small amount of fresh air passes through the two insulation partitions to enter the middle insulation pipe section. At this time, the fresh air and exhaust air on both sides of the gap of the middle insulation partition flow in opposite directions, causing the flow rate of fresh air and exhaust air to almost drop to zero. The two fluids circulate along the two sides of the insulation partition c, and the insulation partition forms an air wall, which further hinders the mixing of fresh air and exhaust air.
6. The barrier type heat pipe heat exchanger according to claim 4, characterized in that: The device consisting of the heat exchange heat pipe and the heat pipe support is divided into three parts, namely an evaporation part, an insulation part and a condensation part.
7. The barrier type heat pipe heat exchanger according to claim 1, characterized in that: The fins have good thermal conductivity and enhance heat exchange between the heat pipe and the gas.